A high-performance solid oxide fuel cell anode based on lanthanum strontium vanadate

Park, Jong‐Sung; Hasson, Ian D.; Gross, Michael D.; Chen, Chen; Vohs, John M.; Gorte, Raymond J.

doi:10.1016/j.jpowsour.2011.05.028

Cited by 58 publications

(45 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…anode and cathode, electrode/electrolyte interfacial resistance and current collection of silver paste. This result is consistent with what has been reported for infiltrating LST 44 , LSTM 45 and LSCM 46~48 as anodes. The cell losses are dominated by the polarization resistance of electrodes (R p ), which are represented by the distance between the high and low frequency intercepts of the curve with the abscissa.…”

Section: Intermediate Temperature Fuel Cell Testssupporting

confidence: 93%

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃

Cassidy

et al. 2016

J. Mater. Chem. A

View full text Add to dashboard Cite

Perovskite electrodes have been considered as an alternative to Ni-YSZ cermet-based anodes as they afford better tolerance towards coking and impurities and due to redox stability can allow very high levels of fuel utilisation. Unfortunately performance levels have rarely been sufficient, especially for a second generation anode supported concept. A-site deficient lanthanum and calcium co-doped SrTiO3, La0.2Sr0.25Ca0.45TiO3 (LSCTA-) shows promising thermal, mechanical and electrical properties and has been investigated in this study as a potential anode support material for SOFCs. Flat multilayer ceramics cells were fabricated by aqueous tape casting and co-sintering, comprising a 450-µm thick porous LSCTA-scaffold support, a dense YSZ electrolyte and a thin layer of La0.8Sr0.2CoO3-δ (LSC)-La0.8Sr0.2FeO3-δ ( LSF)-YSZ cathode. Impregnation of a small content of Ni significantly enhanced fuel cell performance over naked LSCTA-. Use of ceria as a co-catalyst was found to improve the microstructure and stability of impregnated Ni and this in combination with the catalytic enhancement from ceria significantly improved performance over Ni impregnation alone. With addition of CeO2 and Ni to a titanate scaffold anode that had been pre-reduced at 1000 o C, a maximum powder density of 0.96Wcm -2 can be achieved at 800 o C using humidified hydrogen as fuel. The encouraging results show that an oxide anode material, LSCTA-can be used as anode support with YSZ electrolyte heralding a new option for SOFC development.

show abstract

Section: Intermediate Temperature Fuel Cell Testssupporting

confidence: 93%

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃

Cassidy

et al. 2016

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

“…The slope of the IV curve (Figure 3 (a)) and the R p estimated from impedance plot (Figure 3(c) side can also contribute to the increase of impedance because the difference of the partial pressure of oxygen exerts greater influence on the R p value, as shown in Figure 3 (c). [15,31].…”

Section: Methodsmentioning

confidence: 99%

“…Second, the low conductivity of most ceramics in a fuel environment prohibits a configuration with a thick anode because of the large ohmic losses that it might cause [14]. In this study, we decided to use La 0.7 Sr 0.3 VO 3- (LSV red ) as the anode material as it has recently been shown to provide good electronic conductivity in scaffold configuration [15,16,17]. For example, the effective electronic conductivity of 30 wt.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterisation of a large-area solid oxide fuel cell based on dual tape cast YSZ electrode skeleton supported YSZ electrolytes with vanadate and ferrite perovskite-impregnated anodes and cathodes

Vohs

Gorte

et al. 2014

J. Mater. Chem. A

View full text Add to dashboard Cite

Infiltration of ceramic materials into a pre-formed ceramic scaffold is an effective way of fabricating a solid oxide fuel cell with nano-structured ceramic electrodes by avoiding detrimental interfacial reactions through low-temperature processing for achieving high performance using hydrogen as well as carbonaceous fuel.However, there are, however, significant concerns about the applicability of this method because of the difficulty in fabricating a large-area gas-tight but thin electrolyte between two highly porous ceramic and the multiple repetitions of infiltration process. Here, a large-area (5 cm by 5 cm) scaffold with a thin yttria-

show abstract

“…3 Anodes based on the ceramic conductors with the perovskite structure, for example La 1−x Sr x Cr 1−y Mn y O 3−δ (LSCM), La 1−x Sr x TiO 3−δ (LST), La 1−x Sr x Cr 1−y Fe y O 3−δ (LSCrF) and La 1−x Sr x VO 3−δ (LSV), are considered to be promising alternatives to Ni-cermet anodes. [6][7][8][9][10][11][12]14,15,[22][23][24][25] It has been shown that because of the relatively low catalytic activity, ceramic anodes are much more tolerant toward the carbon deposition and sulfur poisoning than Ni-cermet anodes. 13,26 However, to achieve the reasonable electrochemical activity of the ceramic anodes, the additional catalytic centers, like CeO 2 and Pd, must be deposited into/onto the anode.…”

mentioning

confidence: 99%

Investigation of Time Stability of Sr-Doped Lanthanum Vanadium Oxide Anode and Sr-Doped Lanthanum Cobalt Oxide Cathode Based on Samaria Doped Ceria Electrolyte Using Electrochemical and TOF-SIMS Methods

Tamm

Möller

Nurk

et al. 2016

J. Electrochem. Soc.

View full text Add to dashboard Cite

The time stability of solid oxide fuel cell (SOFC) was tested using all ceramic La 0.7 Sr 0.3 VO 3-δ -Ce 0.85 Sm 0.15 O 2-δ (SDC) perovskite material as an alternative anode and La 0.8 Sr 0.2 CoO 3−δ -SDC as a cathode. Both electrodes were prepared using infiltration method. The time stability measurements were carried out for 220 h under 0.6 V cell polarization in H 2 fuel and at working temperatures of 600 • C and 700 • C. At both temperatures, the total polarization resistance, R P , increased in time and the maximal power density values decreased nearly 7% during testing. At the working temperature of 600 • C the R P reached its constant value, 0.50 cm 2 , during the first 12 h of polarization at 0.6 V. At 700 • C noticeable increase in R P was seen within 100 h operation before the constant R P value, 0.50 cm 2 , was established. The microstructure and composition of the single cells, including the mobility of Sr within the cell components, before and after time stability measurements, were analyzed using secondary ion mass spectrometry method. No degradation of cell components and Sr mobility was observed after the cell preparation process and only minor mobility of elements was seen after 24 h of operation at 600 • C and 700 • C. However, noticeable Sr, V, Co and La mobility was observed after 220 h operation at 600 • C and 700 • Solid oxide fuel cells (SOFC) are promising energy conversion systems due to their high electrical efficiency (up to 60%), fuel flexibility and environmental friendliness.1,2 Traditional materials, like Ni-YSZ anode envisaged already four decades ago, continue to dominate as the anode material for SOFC due to the issues and problems associated with the newly discovered materials for SOFC systems, for instance lower electrochemical activity, relatively small thickness of the anode, and unknown degradation and time stability.3-12 However, the main disadvantage of Ni-YSZ anode is severe deactivation in hydrocarbon and hydrocarbon derived synthetic fuels due to the carbon formation/deposition on the Ni surfaces and sulfur poisoning from the impurities of the fuel. [13][14][15][16][17][18][19][20][21][22] In spite of that the carburization and sulfidation stability of the Ni-YSZ electrodes (if using hydrocarbons) have been improved in the recent years through maneuvering of operation conditions. , are considered to be promising alternatives to Ni-cermet anodes. [6][7][8][9][10][11][12]14,15,[22][23][24][25] It has been shown that because of the relatively low catalytic activity, ceramic anodes are much more tolerant toward the carbon deposition and sulfur poisoning than Ni-cermet anodes. 13,26 However, to achieve the reasonable electrochemical activity of the ceramic anodes, the additional catalytic centers, like CeO 2 and Pd, must be deposited into/onto the anode. [6][7][8][9][10]12,22,25 In spite of the active research conducted in the recent decade on the field of alternative ceramic anode materials with perovskite structure, only few studies can be found discussing the degradatio...

show abstract

A high-performance solid oxide fuel cell anode based on lanthanum strontium vanadate

Cited by 58 publications

References 43 publications

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃

Fabrication and characterisation of a large-area solid oxide fuel cell based on dual tape cast YSZ electrode skeleton supported YSZ electrolytes with vanadate and ferrite perovskite-impregnated anodes and cathodes

Investigation of Time Stability of Sr-Doped Lanthanum Vanadium Oxide Anode and Sr-Doped Lanthanum Cobalt Oxide Cathode Based on Samaria Doped Ceria Electrolyte Using Electrochemical and TOF-SIMS Methods

Contact Info

Product

Resources

About

A high-performance solid oxide fuel cell anode based on lanthanum strontium vanadate

Cited by 58 publications

References 43 publications

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO3

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO3

Fabrication and characterisation of a large-area solid oxide fuel cell based on dual tape cast YSZ electrode skeleton supported YSZ electrolytes with vanadate and ferrite perovskite-impregnated anodes and cathodes

Investigation of Time Stability of Sr-Doped Lanthanum Vanadium Oxide Anode and Sr-Doped Lanthanum Cobalt Oxide Cathode Based on Samaria Doped Ceria Electrolyte Using Electrochemical and TOF-SIMS Methods

Contact Info

Product

Resources

About

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃